The patch titled
Subject: mm: use dedicated helper to access rlimit value
has been added to the -mm tree. Its filename is
mm-use-dedicated-helper-to-access-rlimit-value.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-use-dedicated-helper-to-access-rlimit-value.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-use-dedicated-helper-to-access-rlimit-value.patch
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------------------------------------------------------
From: Krzysztof Opasiak <k.opasiak@xxxxxxxxxxx>
Subject: mm: use dedicated helper to access rlimit value
Use rlimit() helper instead of manually writing whole chain from current
task to rlim_cur.
Link: http://lkml.kernel.org/r/20170705172811.8027-1-k.opasiak@xxxxxxxxxxx
Signed-off-by: Krzysztof Opasiak <k.opasiak@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff -puN mm/mmap.c~mm-use-dedicated-helper-to-access-rlimit-value mm/mmap.c
--- a/mm/mmap.c~mm-use-dedicated-helper-to-access-rlimit-value
+++ a/mm/mmap.c
@@ -2177,7 +2177,6 @@ static int acct_stack_growth(struct vm_a
unsigned long size, unsigned long grow)
{
struct mm_struct *mm = vma->vm_mm;
- struct rlimit *rlim = current->signal->rlim;
unsigned long new_start;
/* address space limit tests */
@@ -2185,7 +2184,7 @@ static int acct_stack_growth(struct vm_a
return -ENOMEM;
/* Stack limit test */
- if (size > READ_ONCE(rlim[RLIMIT_STACK].rlim_cur))
+ if (size > rlimit(RLIMIT_STACK))
return -ENOMEM;
/* mlock limit tests */
@@ -2193,7 +2192,7 @@ static int acct_stack_growth(struct vm_a
unsigned long locked;
unsigned long limit;
locked = mm->locked_vm + grow;
- limit = READ_ONCE(rlim[RLIMIT_MEMLOCK].rlim_cur);
+ limit = rlimit(RLIMIT_MEMLOCK);
limit >>= PAGE_SHIFT;
if (locked > limit && !capable(CAP_IPC_LOCK))
return -ENOMEM;
_
Patches currently in -mm which might be from k.opasiak@xxxxxxxxxxx are
mm-use-dedicated-helper-to-access-rlimit-value.patch
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